Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe38976c8e6f2f6e…

MALICIOUS

PDF

66.4 KB Created: 2020-11-09 21:25:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e25b0f170cd9953d4ce06d6961f2595e SHA-1: bbd39d13ff2d2a882a3056861cb0415fadb1a696 SHA-256: fe38976c8e6f2f6ec4eb1dfb94266c99b4b6d8a2c584de3e2039cc3dd786e3f0
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffmen.ru/123?keyword=pandora+one+apk+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381543/normal_5f8c7c5093bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447878/normal_5f9def8c761d0.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/410830.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387408/normal_5fa02852986e7.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/xiped_tiparelazelu_bofugefunu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392199/normal_5f8e022bcc9f9.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xezuruxovi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28de45d-c5e2-468f-bcb9-2a91d2dc6b14/tadidapuvubegeveb.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/34809840989.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/xakupopebafopejes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fc10b2-f8d6-45a9-b617-a9f1679e2c06/bruce_lee_jeet_kune_do_fight.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/81899659241.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB8E 4892 bytes
SHA-256: c99f458b5a278f61b9e07b2a375617e28f15bdca239dc8925699233a666a6769
font_01_sfnt_off0000cc41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC41 2140 bytes
SHA-256: fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2
font_02_sfnt_off0000d61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61B 10876 bytes
SHA-256: 93e82d4f8945080a83cef7fca1bc7e38b512104dd3822886cebd70be1b76cf88

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